The document summarizes information about commonly used respiratory system medications including Flonase, Mucomyst, and Ventolin. Flonase is a corticosteroid nasal spray used to reduce swelling and inflammation in the nasal passages. Mucomyst is used to thin mucus in the lungs making breathing easier for conditions like COPD. Ventolin is a bronchodilator inhaler used to treat and prevent bronchospasm in people with asthma or exercise induced breathing problems. All three medications can cause side effects like irritation, nausea, and paradoxical bronchospasm so precautions are outlined.